Apparatus for snow removal



Oct. 11, 1938. A. M. JESWINE APPARATUS FOR snow REMOVAL 2 Sheets-Sheet 1 Filed Jan. 13, 1957 Oct. 11, 1938. A. M. JESWINE APPARATUS FOR SNOW REMOVAL Filed Jan. 13, 1957 2 Sheets-Sheet 2 Patented Oct. 11, 1938 UNITED -A STATES PATEN orrics "meat I APPARATUS FOR SNOW REMOVAL Adolph M. Jeswine, Helena, Mont. Application January 13, 1937 Serial No. 120,454

3 Claims.

My invention consists in a new and useful improvement in apparatus for snow removal and is designed particularly for operation against snow banks or drifts and in such conditions of snow removal as that the depth of snow is considerable and the snow has become tightly packed and hardened. Such conditions, quite common in places of frequent and long continued snows and exceedingly low temperatures, render useless ordinary snow removal devices, such as push plows and inefficient rotary plows. My improved device is designed to disintegrate hard frozen and densely packed snow banks and rapidly remove the loosened snow.

The particularly novel and useful features of my device are the scarifier or snowbreaker, in the form of a heavy drum having curved steel hooks with sharp points by which the hardened snow is disintegrated, an improved form of concave scoop to supply the disintegrated snow to the removal mechanism, and my improved rotor for ejecting the loosened snow, supplied to it by the concave scoop, through its discharge throat and spout. The particularly novel feature of my improved rotor is the novel scoops with which it is supplied; These rotor scoops are so designed and mounted that they extend forwardly from the hub of the rotor toward the supply scoop below the scarifier so that the loose snow is guided by the concave scoop into these rotor scoops. I also provide a. shield over the upper half of the forward side of the rotor so that the snow is supplied by the concave scoop only to the lower half of the rotor. My device is supplied with its own motive power and I prefer to use a radial airplane motor geared to the rotor and the scarifier, therebysecuring adequate power for efficient operation. My device is mounted upon the front of a motor truck whereby it may be driven into the snow bank upon which it is to operate. It is to be understood, of course, that it can as equally well be mounted upon a wheeled vehicle for track travel, as in cases of clearing railroad or street railway rights of way.

While I have illustrated in the drawings filed herewith and have hereinafter fully described one specific embodiment of my invention, it is to be distinctly understood that I do not consider my invention limited to said specific embodiment, but refer for its scope to the claims appended hereto.

Inthe drawings:

Fig. 1 is a side elevation of my device.

Fig. 2 is a top plan View.

Fig; 3 is an enlarged vertical section on the lined-3 of Fig. 4. I

' Fig. 4 is an enlarged vertical section on the line 4--4 of'Fig. 3.

Fig. 5 is' a section on the line 5-5 of Fig. 3.

As illustrated in the drawings, the device is mounted upon the front of a motor truck T by the brackets with links 2 to which is attached thernotor housing 3 on the front end of which. is theannular plate' 4 having its outer edge seated iri'theperiphe'ral flange 5 of the rotor housing 6 and attached thereto by bolts 1. Centrally mounted in the plate 4 is the journal 8 carrying the roller bearing 9 for the shaft 10 of the motor M in the housing 3. A pinion II on the shaft ll) meshes with the three pinions l2 suitably journaled and symmetrically disposed on the plate 4, and meshing with the circumferential rack I3 bolted to the rear plate M of the rotor l5 which is carried on the roller bearing IE on the outer end ll of the shaft It. The rotor l5 has the radial ogee blades l8 tapering outwardly from the hub l9 and extending forwardly at right angles from the plate I4. The circumferential rack i3 is held in proper alignment by the ball bearings 20 suitably mounted on the peripheral flange 5.

Carried by the rotor housing 6 is the frame 21 carrying the side shields 22 spaced from the housing 6, and the forward shield 23 covering the upper half of the rotor I5, and the arcuate scoop 24 with straight forward cutting edge 25 disposed between the shields 22 and having the slide shoe 26. Suitably mounted on the rear of the frame 21 are the hydraulic rams 21 carrying the caster wheels 28.

Suitably journaled on the frame 2| is the shaft 29 in bearings 3E5. Pivotally mounted on each end of the shaft 29 is a casing 3| and rotatably mounted in the forward ends of these casings 3i is the drum 32 having the scarifying teeth 33. The casings 3! are formed as housings to enclose suitable driving means (not shown), such as sprocket wheels and chains therefor, for connecting the shaft 29 for rotating the drum 32. Each of the casings 3| is provided with a telescoping hydraulic ram 34 for raising and lowering the drum 32.

One of the pinions I2 is provided with a stub shaft 35 passing through the plate 4 and having thereon a sprocket wheel 36 with driving chain Bl passed over the sprocket wheel 38 journaled in the frame 21 and having pinion 39 meshing with pinion 40 mounted on shaft 29, whereby the shaft 29 is driven by the motor M.

The rotor housing 6 is provided with a tangential discharge throat 4| in which is rotatably mounted a discharge spout 42 having the circumferential rack 43 meshing with the worm 44 journaled on the throat 4| and connected by the operating rod 45, with two universal joints 46 and 4?, with the operating wheel 48 in the cab of the truck T.

From the foregoing description of the details of construction of my improved device, its use and operation will be obvious. By the operation of the rams 2'1, the caster wheels 28 are ejected thereby raising the device sufficiently to facilitate move? ment over the road when the device is not in use, the drum 32 being held in raised position by the rams 34-. When it is desired to operate the device,

the operation of the rams 2'! lowers the device until the shoe 26 contacts the surface, bringing the cutting edge 25 close to the surface, and the drum 32 may be adjusted to rest on the surface of the snow for tearing down the snow bank. The motor M is operated to drive the drum 32 and rotor I5, and the snow disintegrated by the hooked teeth 33 is thrown by rotation of the drum 32 into the scoop 24 and thereby directed into the blades H3 of the rotor l whereby it is driven through the throat 4| and spout 42 to be discharged from the device, the spout 42 being operated from the cab of the truck T by the wheel L38 to direct the stream of snow as desired. All of the mechanisms, hydraulic rams, motor, etc. are controlled from the cab of the truck T.

Having described my invention, What I claim is' 1. In an apparatus for snow removal, the com-- bination of a housing; a prime mover in said housing having a driven shaft; a second housing mounted upon the front of the first housing and into which the said shaft projects; a hub rotatable upon the said shaft in said second housing; a plurality of scoops mounted upon said hub and projecting forwardly therefrom to form a rotor; gearing connecting said shaft and said rotor; and a discharge throat opening from said second housing and disposed tangentially relative to said rotor.

2. In an apparatus for snow removal, the combination of a prime mover having a driven shaft; a hub rotatable upon the said shaft; a plurality of scoops mounted upon the said hub; and gearing connecting the said shaft and the said hub.

3. In an apparatus for snow removal, the combination of a housing; a shaft journaled in said housing; a radial motor in said housing for driving said shaft; a second housing having a discharge opening and mounted upon the first housing and into which said shaft projects; a rotor rotatable on said shaft in said second housing; gearing connecting said shaft and said rotor; a shield covering the upper half of the front of said second housing; a concave scoop about the lower half of said second housing; and a vertical cutting blade disposed on each side of said scoop.

ADOLPH M. JESWINE. 

